Investigation of the Safety of an HIV-1 Vaccine Given Intra-muscularly and Intra-nasally to Healthy Female Subjects

This study has been completed.

Sponsor:

Mymetics Corporation

ClinicalTrials.gov Identifier:

NCT01084343

First Posted: March 10, 2010

Last Update Posted: July 13, 2012

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This study is designed to investigate the safety and efficacy of a newly developed vaccine against HIV-1 in female healthy subjects. Safety will be assessed by local and systemic adverse reactions, investigations of blood and urine, and physical exam including vital sign measurements. Efficacy will be assessed in blood, and in vaginal and rectal mucosal samples.

A Dose Escalating Phase I Study, Double-blind, Randomized, Placebo-controlled for Examining the Safety and Tolerability to a Prophylactic HIV-1 Vaccine Called MYM-V101, Administered i.m. in Combination With i.n. Administrations to Healthy Female Subjects.

Subjects in this panel receive the low dose of vaccine (10 microgram of peptides). Twelve subjects are included in this panel, 8 of them receive the active vaccine and 4 receive the carrier only (placebo).

Biological: MYM-V101

Panel 1: 2 vaccinations in the muscles followed by 2 vaccinations in the nose, 10 microgram or placebo each, every 8 weeks.

Panel 2: 2 vaccinations in the muscles followed by 2 vaccinations in the nose, 50 microgram or placebo each, every 8 weeks.

Other Names:

MYM-V101.1: low dose intramuscular

MYM-V101.2: high dose intramuscular

MYM-V101.3: high dose intranasal

MYM-V101.4: low dose intranasal

Active Comparator: Panel 2

Subjects in this panel receive the high dose of vaccine (50 microgram of peptides). Twelve subjects are included in this panel, 8 of them receive the active vaccine and 4 receive the carrier only (placebo).

Biological: MYM-V101

Panel 1: 2 vaccinations in the muscles followed by 2 vaccinations in the nose, 10 microgram or placebo each, every 8 weeks.

Panel 2: 2 vaccinations in the muscles followed by 2 vaccinations in the nose, 50 microgram or placebo each, every 8 weeks.

Other Names:

MYM-V101.1: low dose intramuscular

MYM-V101.2: high dose intramuscular

MYM-V101.3: high dose intranasal

MYM-V101.4: low dose intranasal

Detailed Description:

The current treatment of HIV is aimed at delaying the disease process after the body has been infected with the virus. HIV treatment does not prevent the spreading of the virus to uninfected people. Prevention of HIV infection could be realized by a vaccine. An effective vaccine could slow down the world wide epidemic. None of the potential vaccines investigated in the past 20 years could provide protection to HIV. All these vaccines were aimed at stimulating an immune reaction in the blood. A new theory has been raised that protection against HIV should take place at the site where the virus in most cases enters the body after sexual contacts, in the vagina and rectum. Mymetics Corporation, sponsor of this clinical trial, has developed a new vaccine, based on the so-called virosome technique. This vaccine should be able to induce a local immune reaction in the mucosa of vagina and rectum. Investigations in laboratory animals showed that the newly developed vaccine was safe and well tolerated and a local immune reaction in the mucosa could be established. The next step is to investigate if the concept of mucosal immunity does also apply in the human being. Therefore this trial is being designed to investigate if the newly developed vaccine is also safe and well tolerated in healthy subjects. In addition, it will be investigated if the vaccine can induce an immune response in the mucosa of vagina and rectum. The vaccine will be investigated for the first time in man. The vaccine consists of a very small part of the HIV 1 virus, coupled to a carrier, the virosome. The vaccine also contains two proteins of the influenza virus. These are needed for stability of the vaccine and activation of the immune system in general. There will be two groups of 12 healthy female subjects. In total 24 subjects will participate in this study. The first group will be vaccinated with a low dose of the vaccine (10 microgram of peptide). If the vaccine is assessed as safe during the safety reviews, the second group will be vaccinated with a high dose of vaccine (50 microgram of peptide). Safety and tolerability of the high dose will also be assessed during two safety reviews. Each subject will be vaccinated on four occasions, separated by eight weeks. The first two vaccinations will be given in the muscles and the third and fourth vaccination will be given in the nose in order to enhance the immune response in the mucosa. In both groups, eight subjects will be vaccinated with the real vaccine and four subjects will be vaccinated with the carrier only (placebo). Nor the investigator neither the subject will know which vaccination they receive. It will be a so-called double-blinded study. Safety and tolerability will be assessed by the local and systemic adverse reactions. In addition, blood and urine will be investigated and subjects will have a physical examination including vital signs measurements. At home, subjects will complete a diary card for the registration of local and systemic adverse events. The immune response in blood will be measured. For the investigation of the mucosal immune response, a smear from the mucosa of vagina and rectum will be taken and investigated at four visits. This will be performed with special sponges and it is a painless procedure. Total duration of the study for each subject will be 32-34 weeks. HIV infection due to this vaccination is not possible.

Eligibility

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Ages Eligible for Study:

18 Years to 45 Years (Adult)

Sexes Eligible for Study:

Female

Accepts Healthy Volunteers:

Yes

Criteria

Inclusion Criteria:

Female, aged between 18 and 45 years, extremes included

Having regular menstrual cycles (24 to 30 days). Women that got sterilized by bilateral tubal ligation are allowed, as long as they have regular cycles

Non-smoking or smoking (no more than 10 cigarettes or 2 cigars or 2 pipes per day, for at least 3 months prior to selection)

Informed Consent Form (ICF) signed voluntarily before first trial-related activity

Able to comply with all protocol requirements

Healthy on the basis of a medical evaluation that reveals the absence of any clinically relevant abnormality and includes a physical examination, a gynecological examination, medical history, electrocardiogram, vital signs and the results of blood biochemistry and hematology tests and a urinalysis carried out at screening

If the subject is of childbearing potential, agrees to use adequate contraception (oral contraceptives or double barrier method, as described in section 5.2.4, point 7 of the protocol) and not become pregnant for the duration of the study.

Exclusion Criteria:

Male

Female subject without regular menstrual cycle (24-30 days)

History of total hysterectomy

Female subject of childbearing potential without use of effective birth control method(s), or not willing to continue practicing these birth control method(s) for the duration of the trial

Spermicides or other chemicals as used in contraceptive barrier methods (i.e., a male or female condom, diaphragm, cervical cap or intra-uterine device);

A positive pregnancy test or breast feeding at screening

A positive HIV-1 or HIV-2 test at trial screening

Having vaginitis as observed by local inspection and vaginal swab

Recurrent vaginal infections or sexually transmitted diseases within one year prior to vaccination

History or evidence of current use of alcohol, barbiturate, amphetamine, recreational or narcotic drugs which in the investigator's opinion would compromise subject safety or compliance with trial procedures